Thermal comfort in naturally ventilated buildings with double skin façade under tropical climate conditions: The influence of key design parameters

Sabrina Barbosa, Kenneth Ip, Ryan Southall

Research output: Contribution to journalArticle

Abstract

This paper evaluates the influence of key design parameters on the thermal behaviour of a naturally ventilated building with Double Skin Façade (DSF) under tropical climate conditions. Using a reference model of a conventional office building in the city of Rio de Janeiro and two groups of design parameters, dynamic thermal simulations are systematically applied to optimize design options with the aim to maximize the annual acceptable thermal comfort levels within the occupied spaces. This study not only defines the dimensional parameters to maximize the system airflows, but also investigates the significance of design decisions such as thermal mass and shading devices on the system performance. Options to avoid unintentional reverse flow on the upper floors and maintenance of balanced horizontal airflow rates across the floors are also addressed. Two optimized naturally ventilated building models with DSF are developed and evaluated in terms of thermal performance. Results show that acceptable thermal comfort levels can be met for nearly 70% of the occupied hours. Although the office building will still require other means of cooling during peak summer periods, the incorporation of DSF as part of a mixed-mode ventilation strategy can potentially have a significant impact on annual energy consumption.
Original languageEnglish
Pages (from-to)397-406
Number of pages10
JournalEnergy and Buildings
Volume109
DOIs
Publication statusPublished - 15 Dec 2015

Bibliographical note

© 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Double skin façade
  • Tropical climate
  • Thermal comfort
  • Natural ventilation
  • Design parameters

Fingerprint Dive into the research topics of 'Thermal comfort in naturally ventilated buildings with double skin façade under tropical climate conditions: The influence of key design parameters'. Together they form a unique fingerprint.

  • Cite this